The Motor Rotates In The Opposite Direction From The Run Command - YASKAWA GA700 Technical Manual

6.10 Troubleshooting Without Fault Display
Causes
The settings for voltage input and current input of the
master frequency reference are incorrect.
The selection for the sinking/sourcing mode and the
internal/external power supply is incorrect.
The frequency reference is too low.
The MFAI setting is incorrect.
was pushed.
The 2-wire sequence and 3-wire sequence are set
incorrectly.
◆

The Motor Rotates in the Opposite Direction from the Run Command

Causes
The phase wiring between the drive and motor is incorrect.
The forward direction for the motor is set incorrectly.
390
Examine these analog input terminal signal level settings:
• Terminal A1: DIP switch S1-1 and H3-01 [Terminal A1 Signal Level
Select]
• Terminal A2: DIP switch S1-2 and H3-09 [Terminal A2 Signal Level
Select]
• Terminal A3: DIP switch S4, S1-3 and H3-05 [Terminal A3 Signal Level
Select]
• For sinking mode, close the circuit between terminals SC-SP with a wire
jumper.
• For sourcing mode, close the circuit between terminals SC-SN with a
wire jumper.
• For external power supply, remove the wire jumper.
• View U1-01 [Freq Reference].
• Increase the frequency reference to a value higher than E1-09 [Minimum
Output Frequency].
• Make sure that the functions set to the MFAI are correct. The frequency
reference is 0 when H3-02, H3-10, H3-06 = 1 [MFAI Function Select =
Frequency Gain] and voltage (current) is not input.
• View U1-13 to U1-15 [Terminal A1, A2, A3 Input Voltage] to see if the
analog input values set to terminals A1, A2, and A3 are applicable.
Turn the Run command OFF then ON from an external input.
Note:
When you push
o2-02 = 0 [STOP Key Function Selection = Disabled] to disable the
function.
• Set one of the parameters H1-03 to H1-08 [Terminals S3 to S8 Function
Select] to 0 [3-Wire Sequence] to enable the 3-wire sequence.
• If a 2-wire sequence is necessary, make sure that H1-03 to H1-08 ≠ 0.
• Examine the wiring between the drive and motor.
• Connect drive output terminals U/T1, V/T2, and W/T3 in the correct
sequence to agree with motor terminals U, V, and W.
• Switch two motor cables U, V, and W to reverse motor direction.
• Connect drive output terminals U/T1, V/T2, and W/T3 in the correct
sequence to agree with motor terminals U, V, and W.
• Switch two motor cables U, V, and W to reverse motor direction.
Figure 6.1 Forward Rotating Motor
Note:
• For Yaskawa motors, the forward direction is counterclockwise when
looking from the motor shaft side.
• Refer to the motor specifications, and make sure that the forward
rotation direction is correct for the application. The forward rotation
direction of motors can be different for different motor manufacturers
and types.
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
Possible Solutions
during operation, the drive will ramp to stop. Set
Possible Solutions
A
B
A - For B - Load
ward Shaft
Rota
tion
Direc
tion